反应详情

The 2-chloromethyl-3,5-dimethyl-4-nitropyridine of formula-III is dissolved in a protic solvent and reacted with 2-mercapto-5-methoxy benzimidazole of the formula-VII with a base to get 5-methoxy-2-(((3,5-dimethyl-4-nitro-2-pyridinyl)methyl)thio)-1H-benzimidazole of formula-VIII. After recrystallization from suitable solvents, pure compound-VIII is obtained with an impurity, 5-methoxy-2-(((3,5-dimethyl-4-chloro-2-pyridinyl)methyl)thio-1H-benzimidazole, of formula-XV less than 0.1%.